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| 8 & 10 cyl Bristol cars Type 407 onwards - restoration, repair, maintenance etc |
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20-03-22, 09:15 AM
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If you have +12 volts supplied from the driver's side switch then the circuit for the passenger switch can be simplified as in the attached diagram.
The best tool for fault finding will be a 12V bulb that draws a few amps of current. A digital multimeter may give misleading readings as it won't put any load on the circuit. 
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